Housing for current and voltage regulators



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HOUSING FOR CURRENT AND VOLTAGE REGULATORS Original Filed July '1, 19402' Sheets-Sheet 1 Fig.2.

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HOUSING FOR CURRENT AND VOLTAGE REGULATORS I Original Filed July-l,1940. 2 Shee ts-Sheet 2 WITNEJS I y, ZSnb entor WWQ m, %wmey PatentedNov. 24, 1942 HOUSING FOR CURRENT AND VOLTAGE REGULATORS Charles W.Musser, Omaha, Nebix, assignor to Jubilee Manufacturing Company,

Omaha,

Nebr., a corporation of Nebraska Original application July 1, 1940,Serial No.

343,349. Divided and this application September 7, 1940, Serial No.355,774

2 Claims.

This invention relates to the ignition systems of automobiles and thelike and more particularly to such current and voltage regulatorstherefor which have electro-magnetic coils, the cores of which are eachof two-piece construction and adjustable according to the potentialdifferences of the electrical current output of any one of severalconventional automobile generators to which a regulator may beelectrically connected for governing said output, one of said two piecesof each said core being vibratable and the other rotatable andlongitudinally adjustable for increasing or decreasing the distancebetween said pieces for correspondingly affecting said governmg.

A particular object of the invention is to provide a housing for saidregulator mechanism which includes a part of said mechanism and socooperatively assembled and constructed, and sealed that an adjustmentof a rotatable core part of said mechanism is permitted without breakingsaid seal or disassembling said housing.

Other and further objects and advantages of the invention will beunderstood from the following detailed description thereof, referencebeing had to the accompanying drawings in which:

Figure 1 is a front elevation of the new device, a certain portionthereof being broken away and in section, a door employed being shown inopen position.

Figure 2 is a top plan view thereof, certain portions being broken away,and said door in a closed position.

Figure 3 is a transverse section taken on line 3-3 of Figure 2.

Figure 4 is an enlarged top plan view of said vibratable and rotatablecore parts assembled with an electro-magnetic coil.

Figure 5 is an edge view of a detent for a rotatable core part.

Figure 6 is a plan view of said detent.

The mechanism which provides a portion of the housing of the presentinvention is more particularly described in my co-pending application,Serial No. 343,349, filed July 1, 1940, the title of said applicationbeing Current and voltage regulator, the present application being adivision thereof. It was ascertained during a marketing of severalthousand of the said mechanism that the interests of motorist-usersthereof were best served by permanently adjusting and sealing certainparts of said mechanism at the factory and by skilled operators togetherwith disposing said mechanism within the sealed housing of the presentinvention, whereby unskilled and imauthon ized persons would beprevented from tampering with the said permanent adjustments and theadjustment of that certain core part of the mechanism which is requiredto be adjusted complemental to a particular generator and at the time ofelectrically connecting a mechanism to said generator would bepermitted, and the present invention aims to provide such a particularhousing for said mechanism that an adjustment of a certain rotatablecore part of said mechanism is permitted without breaking the seal ofsaid housing.

In the drawings indicates a metallic ground plate provided with aperimetrically disposed flange 2|, the latter having suitable screws 22for attaching the plate 20 to an automobile engine in a position of use.The several parts of the said mechanism are electrically connected tothe electrical system of an automobile as more particularly described inmy said co-pending application.

A slab of insulation 23 which forms a part of the housing of the presentinvention is provided with a medially disposed recess 24. The slab issuitably secured to the plate 20 by means of rivets 25 said slab havinga perimetrically disposed step 26. A cover portion of the housing isindicated at 28, said cover being provided with a. top, side and endwalls and an open bottom. The perimetrical edge 21 of said bottom issnugly received in the step 26 and when so assembled the cover togetherwith the slab 23 provides said housing for certain permanently sealedportions of electrical instrumentalities of said mechanism disposedbetween the top of said cover and said slab. The cover is secured in thesaid position to the base or ground plate by means of one or more screws29 which, as best shown in Figure 3, have threaded lower ends 30received in said plate. As best shown in Figure 1 the heads 3| of thescrews are disposed within recesses 32 provided in the top of the cover28. After said permanent adjustment of certain portions of saidmechanism, the cover 28 being disposed and secured as above described,sealing wax 33 is adhesively engaged with the heads 3| of said screwsand adjacent portions of the walls of their respectiVe recesses forsealing said cover to the slab 23, said wax being protectingly disposedwithin said recesses which insures against a breakage of said wax bycontact with foreign objects. As best shown in Figure 1, the front wallof the cover 28 is provided with an aperture 34 and a door 35 fornormally closing said apertur is pivotally mounted as at 36 whereby attimes when the door is swung to the position thereof shown in Figure 3the aperture 34 is snugly closed. The annular wall of the aperture 34 isprovided with an inwardly disposed finger or indicator 3'! for purposeslater described.

A current regulator coil 38 is disposed approximately medially of thelongitudinal length of the slab 23 and as more particularly shown in thesaid copending application a voltage regulator coil 39 is disposed atone side of th coil 38 and a cut-out shunt coil 40 at the other sidethereof. The windings of the coil 40 are disposed within acut-out seriescoil 4!. The coils 4i] and 4| are provided with a core 42 which iscommon to said coils and said core is similar in construction withrespect to the core 43 of the coil 38 and also similar with respect tothe core 44 of the coil 39. Each of said three cores is of two piececonstruction whereby an air gap is provided between said two pieces ofeach core. Each core includes a rotatable piece and a vibratable piece.The rotatable pieces for the coils 39 and 40 are permanently adjusted atthe factory and sealing wax then applied thereto as indicated at A inFigure 2, said sealing wax A being adhesively secured to the rotatablecore and to later described spring detents therefore.

The current regulator coil 38, as shown in Figure 3, is disposed arounda sleeve of insulation 45 and a disk of insulation 45 is provided ateach end of said coil and between the latter and the respective adjacentsupports which include a metallic L-shaped pole piece 4! and a plainpole piece 48. The shorter arm 41 of the pole piece 41 is connected toand in contact with the pole piece 48, said pole pieces extend throughthe slab 23, being connected together by means of a terminal 49, thelatter being disposed within the recess 24 of the slab 23 whereby thepole pieces 41 and 48 together with the terminal 49 provide a of a rivetwhich extends through the core portion 43, the head of said rivet beingpeened to a spring-arm for mechanically securing said arm and core parttogether whereby magnetic induction is permitted between the core parts43 and 43' and physical contact thereof prevented, said boss 5!]preventing the core parts from freezing or adhering together at timeswhen an electrical circuit is closed through the coil 38.

As best shown in Figure 4 the core parts 43 and 43 are in approximatealignment and disposed oppositely within the sleeve 45.

The core part 43 is longitudinally adjustable with respect to thevibratable core part 43, being provided with a screw thread 53, thelatter being complemental to a screw thread provided on the pole piece47 through which the core part 43 extends and in a manner whereby thepart 43 may be rotated for providing a minute adjustment of the spacebetween the oppositely disposed ends of the core parts 43 and 43 foradapting the coil 38 to a particular generator to which it iselectrically connected.

The outer end of the core part 43 is provided with a slot 54 adapted toreceive a screw driver bit therein for facilitating a rotation andminute adjustment thereof at times when the door 35 is in an openposition.

A dial is axially secured adjacent said slotted end of the threadedshaft core part 43, said dial having a face adjacent to said door whichis provided with radially disposed figures thereon for denoting a degreeof adjustment and rotation of the core part 43 in conjunction with thecooperative fin er 3i provided on the wall of the aperture 34 of thecover.

A particular detent means is employed for holding the core part 43 in aselected position of adjustment. Said detent means includes aspring-steel strip 55 which is provided at each of its sides with a hookportion 58, hooks, as best shown in Figure 4, being disposed over theside edges of and clamped to the pole piece 4! whereby the strip 55 isprevented from rotating times when the core part 43 is rotated during anadjustment of the latter with said screw driver.

[is best shown in Figure 6, the strip 55 is provided with a mediallydisposed aperture 51 through which the threaded part 5:! of the core 53extends. As best shown in Figure 5, the side walls of the aperture 51provide a pair of outwardly and oppositely disposed resilient tangs 58and 55 since said strip preferably is formed entirely of spring steel.

As best shown in Figure 4, the tang 58 engages on side of a convolutionof the thread 53 of the core part 43 and the tang 9 on the opposite sideof said convolution. As thus described it will be noted that the freeends of the tangs become moved from the normal aligned position t ereofshown in Figure 5 to the cooperative posi-- of use and non-alignmentthereof, as shown in Figure 4, when applied to a convolution of thethread 53. said applying being consuinated by rotating the shaft corepart 43 through said during an assembly of the me .ianisni, saidmovement of said tangs with respect to each other causing said tang-s tobe deformed for firmly gripping said convolution and prevent ct movementof the core part 43 incident shocks and jars generated during a roadtraveling move- -t of an automobile or the like.

As shown in Figure l, and as more partiula-rly described in said co-pnding application one end of the spring-arm 5! is secured by means ofrivets 6! to a bi-metallic portion of arm 5!, said portion consisting oftwo oppositely disposed pieces of metal and 63 each of which has adifferent thermal characteristic for providing a thermostatic devicewhich is secured by means of screws 64 to the plain pole piece 3-3,being spaced from the latter by means of terminals B and C whereby thecore part 43 is hingedly and vibra-tabiy supported. The outer free endof the arm 5| is provided with an electrical contact button. 65 which isadapted to contact times a similar button 65 formed preferably of adifferent metal than the button 55. The contact 66 is carried on astandard or terminal said contact and said terminals being moreparticularly described in the said co-pending appl cation.

As thus described it will be noted that the door 35 may be swung openand the core part adjusted without removing the cover 28 ir breaking thesealing wax 3-3 while at same time the mechanism within the housing isprotected from damage and also a tampering with said mechanism byunskilled persons is prevented.

I claim:

1. A housing for voltage regulators comprising a supporting base, a slabof electrically insulatin material disposed on said base, securingmembers connecting the slab and base at points spaced from the edges ofthe slab, said slab having a groove extending about its entire edgebetween the securing members and the slab edge, a cover having top andside walls and an open bottom, the lower edges of said side Walls beingreceived in the groove in the slab, said top having a recessed portionwith an aperture therein spaced from the side walls of the recess, oneof said side walls having an opening therein, an indicator cooperatingwith said opening, a door secured to the side wall adjacent said openingand movable to cover and uncover the opening, a bolt extending throughthe recess aperture, cover and slab and secured to the supporting base,the bolt having a head disposed in the recess below the top thereof, andsaid bolt firmly securing the cover to the slab and plate, and sealingmeans disposed within said recess for sealing the bolt head in therecess.

2. The combination with a voltage regulator comprising a pre-adjustedsealed part and an adjustable part provided with a dial, of a housingtherefor comprising a supporting plate, a slab of electricallyinsulating material having a perimetrical portion engaging said plateand an intermediate portion spaced from said plate, said intermediateportion of said slab being adapted to support the voltage regulatorparts, securing members connecting the slab and base at points spacedfrom the edges of the slab, said slab having a groove extending aboutits edge between the securing members and the slab edge, a cover havingtop and side walls and open bottom, the lower edges of said side wallsbeing received in the groove in the slab, said top having a recessedportion with an aperture therein spaced from the side walls of therecess, one of said side walls having an opening therein adjacent thevoltage regulator dial, an indicator cooperating with the dial, a doorsecured to the side wall adjacent. the opening and movable to cover anduncover the opening, a bolt extending through the recess aperture, coverand slab and secured to the supporting base, the bolt having a headdisposed in the recess below the top thereof, said bolt firmly securingthe cover to the slab groove, and sealing means disposed Within therecess for sealing the bolt head in the recess.

CHARLES W. MUSSER.

